List of ISP's

Tier 1 ISP's:
-AT&T
-Global Crossing
-SAVVIS
-AOL Transit Data Network
-Level 3

Tier 2 ISP's:
-Cogent Communications (buys from Verio)
-Tiscali International (buys from Sprint)
-Telecom Italia Sparkle (Buys from Verizon Business and Sprint)

Tier 3 ISP's:
-
-WideWorld.net